https://github.com/zaphar/tower-trace-metrics

A tower-http TraceLayer that records metrics.
https://github.com/zaphar/tower-trace-metrics

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A tower-http TraceLayer that records metrics.

• Host: GitHub
• URL: https://github.com/zaphar/tower-trace-metrics
• Owner: zaphar
• License: apache-2.0
• Created: 2023-01-31T00:09:22.000Z (over 3 years ago)
• Default Branch: main
• Last Pushed: 2023-02-04T15:50:33.000Z (over 3 years ago)
• Last Synced: 2025-10-25T08:12:32.476Z (9 months ago)
• Language: Rust
• Size: 7.81 KB
• Stars: 1
• Watchers: 1
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

          

# tower-trace-metrics

A [tower-http](https://crates.io/crates/tower-http) `TraceLayer` that records metrics using the [metrics](https://crates.io/crates/metrics) facade.

```rust

use tower_trace_metrics::make_layer;

use tower::ServiceBuilder;

use bytes;

fn main() {

    let service = ServiceBuilder::new()

        // Make a trace layer where the chunks are bytes::Bytes

        .layer(make_layer(|b: &bytes::Bytes| b.len() as u64));

    // ... Use this service in a Tower middleware stack.

}

```

## Recorded Metrics

* http_request_counter The total count of all requests

* http_request_failure_counter The total count of all request failures

* http_request_size_bytes_hist A histogram of request size in bytes

* http_request_request_time_micros_hist A histogram of request time in microseconds

Each metric is faceted by `path`, `method`, and `host` for the request.